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Invasive Plant Management Contractors

In British Columbia, it is the responsibility of land owners under the Weed Control Act to manage noxious plants on their property - either by managing the plants themselves, or hiring a certified contractor.

Not all noxious plants need to be managed by chemical control, and there are other tools available (ie. mechanical, biological). However, some plants (ie. knotweeds) only have chemical control as the only effective option, either due to the way the plants grow, the toxicity, or the large area infested.

Pesticide applicators must be either the land manager/owner or have permission from the land manager/owner prior to herbicide application.

Pesticides (e.g., herbicides, insecticides, fungicides) are regulated by the federal and provincial government, and municipal governments often have pesticide bylaws.

  • Health Canada evaluates and approves chemical pest control products as per the Pest  Control Products Act.
  • The BC Integrated Pest Management Act sets out the requirements for the use and sale of pesticides in British Columbia. This Act is administered by the Ministry of Environment.
  • Several municipalities have adopted bylaws which prohibit the use of certain pesticides.

Everyone who uses pesticides must be familiar with all relevant laws.

Private Property

Property owners have the option of hiring an invasive plant management contractor to help them manage noxious weeds. However, if land owners decide to do control work themselves, there are some things to keep in mind.

On private property, residents may require a Residential Applicator Certificate (RAC). However, this is not required for treatment of plants that are poisonous for people to touch, invasive plants and noxious weeds listed in the Weed Control Legislation, and weeds growing through cracks in hard surfaces such as asphalt or concrete.

For other invasive plants not listed in the Weed Control Legislation, the owner may obtain a Residential Applicators Certificate or use a qualified company.


Contractors (a hired business)

From the Integrated Pest Management Legislation, a valid pesticide licence is required to:

  • offer a service to apply most pesticides;
  • apply most pesticides on public land including local government lands; and
  • apply pesticides to landscaped areas on private land, including outside office buildings and other facilities.

Please see "Pesticides & Pest Management" for more information.

ONLY companies or practitioners with a valid Pesticide Licence and staff who are certified applicators (or working under a certified applicator) may apply herbicide on invasive plants located on public lands in British Columbia.

Here are a few things to consider about a pest control company before you hire them to apply pesticides on your property:

  • Do you have experience dealing with invasive plants?
  • Will you provide a free estimate and come to verify the identification of my plant?
  • Are you licensed to work in my municipality?
  • What methods will you use and when will I start to see plant damage/death?
  • Do you and your staff have the appropriate licences and permits to apply herbicide?
  • Does your price include follow-up visits and monitoring or just the initial treatment?
  • What is your success rate?
  • Can you provide a list of references who can verify your work?
  • How soon can you send someone?


Please see below a list of local Invasive Plant Management Contractors who have pesticide applicators on staff (by alphabetical order):


Fraser Valley

Drinkwater Environmental Services - 604-302-2317, 

Morrow Bioscience604-317-1413,

Seven Generations Environmental Services - 604-820-5950,

Weed Man Chilliwack604-795-4600,

Western Weed Control - 604-462-0637,


Metro Vancouver

Diamond Head Consulting - 604-733-4886,

Green Admiral Nature Restoration604-317-8903,


Companies based in BC that will operate in the Lower Mainland

Spectrum Resource Group - 250-564-0383, (Prince George)


(Note that this list does not imply promotion or endorsements of these companies or their work - this list is only here as a resource for informational purposes only. If you are an invasive plant management company that has the required certification for noxious weed management and would like addition to this list, please contact